Image size: h 9.3cm x w 11.3cm

Object Type: Paper Negative-Camera

Physical description: waxed

Inscription: in pencil, elaborate letter 'n' with mathematical symbol for. Pi, with 9 below; pencil rule lines along two edges

Provenance:
Matilda Talbot 1934

Owner: National Science and Media Museum

Object owner number: 1937-1591

Collection: Science Museum Collection